<!-- 用户列表组件 -->
<template>
  <div class="">
    <!-- 面包屑区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 栅格布局容器 -->
      <!-- gutter:属性来指定每一栏之间的间隔 -->
      <el-row :gutter="10">
        <!-- span属性:一列占多少份 -->
        <el-col :span="8">
          <!-- 搜索与添加区域 -->
          <!-- clearable:可得到一个可清空的输入框 -->
          <!-- clear:在点击由 clearable 属性生成的清空按钮时触发 -->
          <el-input
            placeholder="请输入内容"
            clearable
            @clear="getUserList()"
            v-model="queryInfo.query"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList()"
            >
            </el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <!-- border:设置表格边框 -->
      <!-- stripe:属性可以创建带斑马纹的表格,隔行变色 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="#"> </el-table-column>
        <el-table-column label="姓名" prop="username"> </el-table-column>
        <el-table-column label="邮箱" prop="email"> </el-table-column>
        <el-table-column label="电话" prop="mobile"> </el-table-column>
        <el-table-column label="角色" prop="role_name"> </el-table-column>

        <el-table-column label="状态">
          <template slot-scope="scope">
            <!-- change:switch 状态发生变化时的回调函数 -->
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>

        <el-table-column label="操作">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页功能区域 -->
      <!-- size-change:pageSize改变时会触发,切换每页多少条的菜单 -->
      <!-- current-change:currentPage 页码改变时会触发 -->
      <!-- current-page:当前显示第几页，支持 .sync 修饰符 -->
      <!-- page-sizes:选择每页显示多少条数据的选项 -->
      <!-- page-size:每页显示多少条数据，支持 .sync 修饰符 -->
      <!-- layout:	组件布局，子组件名用逗号分隔 -->
      <!-- total:总条目数 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 用户列表区域 -->

    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <!-- rules:表单验证规则 -->
      <!-- prop:验证规则的属性,为需校验的字段名 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser()">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户信息的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed()"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo()">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  components: {},
  data() {
    // 验证邮箱的规则
    // rule:验证规则
    // value:需要验证的值
    // cb:回调函数
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb();
      } else {
        cb(new Error("请输入合法的邮箱!"));
      }
    };
    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile =
        /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
      if (regMobile.test(value)) {
        // 合法的邮箱
        return cb();
      } else {
        cb(new Error("请输入合法的手机号!"));
      }
    };
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        // 查询参数
        query: "",
        // 当前页码数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2,
      },
      // 保存用户列表
      userList: [],
      // 总数据条数
      total: 0,

      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          // trigger:什么时候触发
          { required: true, message: "请输入用户名称", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "长度在 6 到 15 个字符",
            trigger: "blur",
          },
        ],
        // validator:指定自定义校验规则
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },

      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 根据id查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
    };
  },
  computed: {},
  watch: {},
  methods: {
    // 获取用户列表数据的方法
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败");
      } else {
        this.userList = res.data.users;
        this.total = res.data.total;
      }
    },

    // 监听swatch开关状态的改变
    userStateChanged(userinfo) {
      this.$http
        .put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        .then((res) => {
          if (res.data.meta.status !== 200) {
            userinfo.mg_state = !userinfo.mg_state;
            return this.$message.erreor("更新用户状态失败");
          } else {
            this.$message.success("更新用户状态成功");
          }
        });
    },

    // 监听pagesize改变的事件，切换每页多少条的菜单
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    // 监听页码值改变的事件，页码改变时会触发
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },

    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    // 点击按钮，添加新用户
    addUser() {
      // validate:对整个表单进行校验的方法，参数为一个回调函数。该回调函数会在校验结束后被调用，并传入两个参数：是否校验成功和未通过校验的字段。若不传入回调函数，则会返回一个 promise
      this.$refs.addFormRef.validate((valid) => {
        // console.log(valid);
        if (!valid) {
          return;
        } else {
          // 可以发起添加用户的网络请求
          this.$http.post("users", this.addForm).then((res) => {
            if (res.data.meta.status !== 201) {
              this.$message.error("添加用户失败");
            } else {
              this.$message.success("添加用户成功");
              this.addDialogVisible = false;
              // 重新获取用户列表数据
              this.getUserList();
            }
          });
        }
      });
    },
    // 修改用户信息的对话框
    showEditDialog(id) {
      this.$http.get("users/" + id).then((res) => {
        if (res.data.meta.status !== 200) {
          return this.$message.error("查询用户信息失败");
        } else {
          this.editForm = res.data.data;
        }
      });
      this.editDialogVisible = true;
    },
    // 监听修改对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    // 修改用户信息并提交
    editUserInfo() {
      // 表单预校验
      this.$refs.editFormRef.validate((valid) => {
        console.log(valid);
        if (!valid) {
          console.log(valid);
          return;
        } else {
          // 发起修改用户信息的数据请求
          this.$http
            .put("users/" + this.editForm.id, {
              email: this.editForm.email,
              mobile: this.editForm.mobile,
            })
            .then((res) => {
              if (res.data.meta.status !== 200) {
                return this.$message.error("更新用户信息失败");
              } else {
                // 关闭修改用户的对话框
                this.editDialogVisible = false;
                // 重新获取用户列表
                this.getUserList();
                // 提示修改成功
                this.$message.success("更新用户信息成功!");
              }
            });
        }
      });
    },

    // 根据id删除对应的用户
    async removeUserById(id) {
      // 询问用户是否删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      // 如果用户确认删除, 则返回值为字符串 confirm
      // 如果用户取消删除, 则返回值为字符串 cancel
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除!");
      } else {
        const { data: res } = await this.$http.delete(`users/${id}`);
        if (res.meta.status !== 200) {
          return this.$message.error("删除用户失败!");
        } else {
          // 重新获取用户列表, 来刷新页面
          this.getUserList();
          return this.$message.success("删除用户成功!");
        }
      }
    },
  },
  created() {
    // 获取用户列表数据
    this.getUserList();
  },
};
</script>
<style lang='less' scoped>
</style>